口袋妖怪白金毒蟾蜍:上次翻译的一点改动,谢谢美丽的洛阳.

来源:百度文库 编辑:高考问答 时间:2024/04/27 16:45:33
摘要
本文以滨州魏桥热电有限公司邹平第三热电厂的短路电流计算和低压厂用电的相关整定计算的主要过程为例,反映了火电厂在具体的设计过程中,厂用电部分应该涉及到的短路电流计算及其低压厂用电保护整定的选择性配合。主要是为了解决厂用电的继电保护及其相关设计的一些实际问题。
而在继电保护整定计算的过程当中,对于动作于跳闸的继电保护装置,应当满足选择性、速动性、灵敏性和可靠性这四个基本要求。通常情况下,可靠性可由所选择的保护装置生产厂家的技术水平来保证,速动性和灵敏性也随着科技水平的不断提高,较之以往也有了很大的改进,但是整定计算的选择性配合则是比较烦琐的,有低压厂用变压器保护和低压自动空气开关或熔断器的保护配合,有上下级自动开关的配合,还有自动开关与上下级熔断器的配合。由于不同的开关型式、不同的技术参数和不同保护特性曲线,这些都给保护的配合带来不便。而该文则重点针对容易被相关人士忽视的选择性配合的问题,以具体的工程设计实例,来阐述选择性配合的重要性及其设计过程。

楼上几位不要影响我的形象啊!我难道连个“闸”都不会翻译吗?呵呵

Abstract

This paper makes an example of the short circuit current calculation and the main process of relative power Setting Calculations in Low - Voltagic Plant in Zhouping 3rd Heat & Power Plant,Binzhou Wei-Qiao Heat & Power Co.,Ltd. Puts forward the aspects and calculative courses involed in power consumption during the practical design of Thermal Power Plant. This is mainly on solving practical problems of Relay Protection and relative designs.
During the course of setting calculation of Relay Protection Equipments, the active trip relay protection equipment should possess four basic properties: selectivity, rapidity, sensitivity, and reliability。Usually, its reliability could be ensured by the technical levels of the chosen protection equipment producing factories, its rapidity and sensitivity have been well modified along with the improvement of technological levels compared with the past. But the combination of setting calculation selectivity is inconvenient. There are combinations of transformer protection for low-voltage station and Low-voltage automatic air switches or auto-fuses, the combination of up-and-down automatic switches, as well as those of automatic switches and up-and-down auto-fuses。Different switch types, technical parameters, and protection property curves bring inconvenience to protection combinations. Thus this paper stresses on the selectivity combination which easy be ignored be relative experts, discusses the importance and designing process based on special engineering design examples.

Summary
This text is to take the short-circuit electric current calculation and low-pressure factories of the hot power station of even third of the bridge hot electricity limited company 邹 of Wei of the strand states use give or get an electric shock of related and whole settle calculating and main process as an example, reflecting the fire power station in concrete design process, the factory uses to give or get an electric shock the short-circuit electric current that the part should involve the calculation and its low-pressure factory protects the whole selectivity match for settle with the electricity.Mainly is for resolving the factory to use electricity after the electricity to protect and it is related to design some actual problem.
But at protect after the electricity whole settle the calculating process in the middle, for action in jump the 闸 of after electricity protection equip, should satisfy the selectivity and move these four basic requests of sex, intelligent and credibilities soon.Usually under circumstance, credibility can the protection device choose by produce the technique level of the factory house to guarantee, moving the sex and intelligent soon also along with continuously raise of science and technology level, compare it to also have the very big improvement before, but whole then settle the calculating selectivity to match with more trivial, have the low-pressure factory to protect to break the protection match of the machine with low-pressure automatic air switch or 熔s with the transformer, have the top and bottom the class match of the automatic switch, still have the automatic switch and top and bottom the class 熔 breaks the match of the machine.Because the different switch pattern, different technique parameter and dissimilarities protect the characteristic curve, these all bring inconvenience for protective match.But that text then the point aim at easily selectivity neglect by related personage match of problem, solid example with the concrete engineering design, elaborate that the importance that selectivity match and it designs the process.

Summary
This text is to take the short-circuit electric current calculation and low-pressure factories of the hot power station of even third of the bridge hot electricity limited company 邹 of Wei of the strand states use give or get an electric shock of related and whole settle calculating and main process as an example, reflecting the fire power station in concrete design process, the factory uses to give or get an electric shock the short-circuit electric current that the part should involve the calculation and its low-pressure factory protects the whole selectivity match for settle with the electricity.Mainly is for resolving the factory to use electricity after the electricity to protect and it is related to design some actual problem.
But at protect after the electricity whole settle the calculating process in the middle, for action in jump the 闸 of after electricity protection equip, should satisfy the selectivity and move these four basic requests of sex, intelligent and credibilities soon.Usually under circumstance, credibility can the protection device choose by produce the technique level of the factory house to guarantee, moving the sex and intelligent soon also along with continuously raise of science and technology level, compare it to also have the very big improvement before, but whole then settle the calculating selectivity to match with more trivial, have the low-pressure factory to protect to break the protection match of the machine with low-pressure automatic air switch or 熔s with the transformer, have the top and bottom the class match of the automatic switch, still have the automatic switch and top and bottom the class 熔 breaks the match of the machine.Because the different switch pattern, different technique parameter and dissimilarities protect the characteristic curve, these all bring inconvenience for protective match.But that text then the point aim at easily selectivity neglect by related personage match of problem, solid example with the concrete engineering design, elaborate that the importance that selectivity match and it designs the process.

Summary
This text is to take the short-circuit electric current calculation and low-pressure factories of the hot power station of even third of the bridge hot electricity limited company 邹 of Wei of the strand states use give or get an electric shock of related and whole settle calculating and main process as an example, reflecting the fire power station in concrete design process, the factory uses to give or get an electric shock the short-circuit electric current that the part should involve the calculation and its low-pressure factory protects the whole selectivity match for settle with the electricity.Mainly is for resolving the factory to use electricity after the electricity to protect and it is related to design some actual problem.
But at protect after the electricity whole settle the calculating process in the middle, for action in jump the 闸 of after electricity protection equip, should satisfy the selectivity and move these four basic requests of sex, intelligent and credibilities soon.Usually under circumstance, credibility can the protection device choose by produce the technique level of the factory house to guarantee, moving the sex and intelligent soon also along with continuously raise of science and technology level, compare it to also have the very big improvement before, but whole then settle the calculating selectivity to match with more trivial, have the low-pressure factory to protect to break the protection match of the machine with low-pressure automatic air switch or 熔s with the transformer, have the top and bottom the class match of the automatic switch, still have the automatic switch and top and bottom the class 熔 breaks the match of the machine.Because the different switch pattern, different technique parameter and dissimilarities protect the characteristic curve, these all bring inconvenience for protective match.But that text then the point aim at easily selectivity neglect by related personage match of problem, solid example with the concrete engineering design, elaborate that the importance that selectivity match and it designs the process.

参考资料:美丽的洛阳